SIOUX FALLS, S.D. (AP) - Drought conditions have worsened dramatically in South Dakota, and all parts of North Dakota have now slipped into some form of drought.

The latest U.S. Drought Monitor map shows 27 percent of South Dakota in the "exceptional" drought category, up from about 7 percent a week ago. More than 82 percent of the state is in severe, extreme or exceptional drought, up from 75 percent.

About half of North Dakota is in severe or extreme drought, up from about 28 percent last week. Areas that were considered just abnormally dry last week are now categorized as being in at least moderate drought.